17.05
sun
sun
Day
66°F
E 9 mph
Precip.
0%
0%
Night
59°F
SE 16 mph
Precip.
0%
0%
18.05
mon
mon
Day
64°F
NE 7 mph
Precip.
0%
0%
Night
61°F
S 11 mph
Precip.
0%
0%
19.05
tue
tue
Day
68°F
N 6 mph
Precip.
0%
0%
Night
64°F
SE 9 mph
Precip.
0%
0%
20.05
wed
wed
Day
70°F
W 11 mph
Precip.
0%
0%
Night
66°F
SW 11 mph
Precip.
0%
0%
21.05
thu
thu
Day
72°F
W 17 mph
Precip.
0%
0%
Night
66°F
W 17 mph
Precip.
0%
0%
22.05
fri
fri
Day
70°F
W 16 mph
Precip.
0%
0%
Night
66°F
SW 9 mph
Precip.
0%
0%
23.05
sat
sat
Day
70°F
NW 5 mph
Precip.
0%
0%
Night
68°F
NW 7 mph
Precip.
0%
0%
24.05
sun
sun
Day
72°F
NE 5 mph
Precip.
0%
0%
Night
70°F
S 7 mph
Precip.
0%
0%
25.05
mon
mon
Day
73°F
NE 6 mph
Precip.
0%
0%
Night
68°F
S 11 mph
Precip.
0%
0%
26.05
tue
tue
Day
77°F
SE 8 mph
Precip.
0%
0%
Night
68°F
SE 14 mph
Precip.
0%
0%
27.05
wed
wed
Day
72°F
N 7 mph
Precip.
0%
0%
Night
70°F
SE 4 mph
Precip.
0%
0%
28.05
thu
thu
Day
72°F
NW 7 mph
Precip.
0%
0%
Night
68°F
NW 6 mph
Precip.
0%
0%
29.05
fri
fri
Day
72°F
N 8 mph
Precip.
0%
0%
Night
72°F
S 13 mph
Precip.
0%
0%
30.05
sat
sat
Day
73°F
N 7 mph
Precip.
0%
0%
Night
72°F
SE 8 mph
Precip.
0%
0%
Sea water temperature in May, °F
Show year:
2026
2025
2024
The average sea water temperature in May of 2026 was 62.7°F. The highest and lowest sea temperatures during the month were 64.0°F and 61.3°F.
Air temperature in Algarve, °F
Precipitation total in Algarve, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Algarve
Algarve on a weather map
Places in Portugal:
Name
°F
24 Hours Forecast
Algarve
Local time: 21:36
May 18, monday
0000
59°F
SE
16 mph
16 mph
0300
57°F
S
9 mph
9 mph
0600
55°F
S
6 mph
6 mph
0900
59°F
S
6 mph
6 mph
1200
64°F
NE
7 mph
7 mph
1500
64°F
NE
15 mph
15 mph
1800
68°F
E
14 mph
14 mph
2100
64°F
SE
16 mph
16 mph
